Title: Box spring assembly

Abstract: A box spring assembly for use as a foundation for a bed mattress. The assembly comprises a wooden frame, slats, spiral springs, corner coil springs, a border wire, and a welded wire top grid. The spiral springs extend parallel to the wooden slats and are secured at the bottom to the slats and at the top to the welded wire grid. Corner reinforcement and resiliency is provided by four corner coil springs, each of which is secured at the bottom to the wooden frame and at the top to the border wire and grid.

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Inventors: King, John Thomas (Sarcoxie, MO, US)
Butler, Blondie (Carthage, MO, US)
Struewing, deceased, Francis R. (late of Carthage, MO, US)

Application Number: 621497
Filing Date: 1975-10-10
Publication_date: 1977-03-22
Assignee: Legget & Platt Incorporated (Carthage, MO)
Primary Class(es): 5/247 5/257
Other Classes:
US Patent Ref:

488060	Dec, 1892	Bunker	5/255.
3087169	Apr, 1963	Melen	5/259.
3833948	Sep, 1974	Surletta	5/247.

Other Refs: 294,962

Apr, 1965	NL

Primary Examiner: Gilliam, Paul R.
Assistant Examiner: Calvert, Andrew M.
Attorney: Wood, Herron & Evans